Physical Review A

Two-photon Doppler-free spectroscopy of the 6 s 2 S 0 1 → 6 s 23 s S 0 1 Rydberg transition for quantum sensing in ytterbium

Anonymous, K. Beloy, Roger C. Brown, Tobias Bothwell, Harikesh Ranganath, Tanner Grogan, Jacob L. Siegel, Andrew D. Ludlow

Published Oct 6, 2026• 0 citations

Publisher

DOI: 10.1103/v16l-synk

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Physical Review A

Two-photon Doppler-free spectroscopy of the 6 s 2 S 0 1 → 6 s 23 s S 0 1 Rydberg transition for quantum sensing in ytterbium

Anonymous, K. Beloy, Roger C. Brown, Tobias Bothwell, Harikesh Ranganath, Tanner Grogan, Jacob L. Siegel, Andrew D. Ludlow

Published Oct 6, 2026• 0 citations

Publisher

DOI: 10.1103/v16l-synk

Related papers

Doppler-free two-photon spectroscopy of Cs $6S_{1/2}$ - $7D_{3/2,\,5/2}$ transitionDoppler-free two-photon spectroscopy of Cs $6S_{1/2}$-$7D_{3/2,\,5/2}$ transition

Chin‐Chun Tsai, Yi-Hsiu Chang, Yingyu Chen +2 more

Bulletin of the American Physical SocietyMay 23, 20090 citations

Doppler-Free Two-Photon Spectroscopy in the VUV: The Helium 11S - 21S Transition

Scott Bergeson, K. G. H. Baldwin, Thomas B. Lucatorto +3 more

Journal of the Optical Society of America BSep 1, 20000 citations

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Bernard Cagnac

Hyperfine InteractionsAug 1, 198512 citations

Two-photon Doppler-free spectroscopy of the $6s^2\;^1S_0 \rightarrow 6s23s\;^1S_0$ Rydberg transition for quantum sensing in ytterbiumTwo-photon Doppler-free spectroscopy of the $6s^2\;^1S_0 \rightarrow 6s23s\;^1S_0$ Rydberg transition for quantum sensing in ytterbium

B. D. Hunt, K. Beloy, Roger C. Brown +5 more

Here we report atomic structure calculations and experimental observations of the two-photon $6s^2\;^1S_0 \rightarrow 6s23s\;^1S_0$ transition in Yb. The unique level structure of Yb places the $6s6p\;^1P_1$ state's energy at $\approx\!49.7\%$ of the ionization energy, which facilitates two-photon Doppler-free excitation of the $6s23s\;^1S_0$ Rydberg state from the $6s^2\;^1S_0$ ground state at a relatively low optical intensity. This $J= 0 \rightarrow J=0$ transition is immune to first-order Zeeman and electric quadrupole shifts, has reduced sensitivity to higher-order Zeeman shifts, and is further predicted to have relatively low sensitivity to density shifts. Using configuration interaction theory, we compute relevant properties of the $6s23s\;^1S_0$ Rydberg state for sensing, including the $C_6$ coefficient, dc polarizability, blackbody radiation (BBR) shift, and BBR depopulation rate. As a first experimental step, we demonstrate two-photon Doppler-free spectroscopy of the $6s^2\;^1S_0 \rightarrow 6s23s\;^1S_0$ transition. From our experimental spectra, we estimate the natural linewidth (lifetime) of the $6s23s\;^1S_0$ state to be 90 kHz (1.8 $μ$ s). We believe this transition, or other $6s^2\;^1S_0 \rightarrow 6sns\;^1S_0$ transitions in Yb with $n\approx23$ , may find use in a variety of sensing applications, potentially including a two-photon clock, electrometer, or BBR thermometer.Here we report atomic structure calculations and experimental observations of the two-photon $6s^2\;^1S_0 \rightarrow 6s23s\;^1S_0$ transition in Yb. The unique level structure of Yb places the $6s6p\;^1P_1$ state's energy at $\approx\!49.7\%$ of the ionization energy, which facilitates two-photon Doppler-free excitation of the $6s23s\;^1S_0$ Rydberg state from the $6s^2\;^1S_0$ ground state at a relatively low optical intensity. This $J= 0 \rightarrow J=0$ transition is immune to first-order Zeeman and electric quadrupole shifts, has reduced sensitivity to higher-order Zeeman shifts, and is further predicted to have relatively low sensitivity to density shifts. Using configuration interaction theory, we compute relevant properties of the $6s23s\;^1S_0$ Rydberg state for sensing, including the $C_6$ coefficient, dc polarizability, blackbody radiation (BBR) shift, and BBR depopulation rate. As a first experimental step, we demonstrate two-photon Doppler-free spectroscopy of the $6s^2\;^1S_0 \rightarrow 6s23s\;^1S_0$ transition. From our experimental spectra, we estimate the natural linewidth (lifetime) of the $6s23s\;^1S_0$ state to be 90 kHz (1.8 $μ$s). We believe this transition, or other $6s^2\;^1S_0 \rightarrow 6sns\;^1S_0$ transitions in Yb with $n\approx23$, may find use in a variety of sensing applications, potentially including a two-photon clock, electrometer, or BBR thermometer.

arXiv:2610.22574Oct 15, 20260 citations

Two-photon spectroscopy of the 6S 1/2 —> 6D 5/2 transition of atomic cesium

N. Ph. Georgiades, Eugene Simon Polzik, Harry J. Kimble

May 8, 19940 citations

Two-photon spectroscopy of ytterbium

M. Y. Mirza, W. W. Duley

Optics CommunicationsFeb 1, 197916 citations

Doppler-free two-photon spectroscopy of Cs

6S_{1/2}

7D_{3/2,\,5/2}

transition

Two-photon Doppler-free spectroscopy of the

6s^2\;^1S_0 \rightarrow 6s23s\;^1S_0

Rydberg transition for quantum sensing in ytterbium

Here we report atomic structure calculations and experimental observations of the two-photon

6s^2\;^1S_0 \rightarrow 6s23s\;^1S_0

transition in Yb. The unique level structure of Yb places the

6s6p\;^1P_1

state's energy at

\approx\!49.7\%

of the ionization energy, which facilitates two-photon Doppler-free excitation of the

6s23s\;^1S_0

Rydberg state from the

6s^2\;^1S_0

ground state at a relatively low optical intensity. This

J= 0 \rightarrow J=0

transition is immune to first-order Zeeman and electric quadrupole shifts, has reduced sensitivity to higher-order Zeeman shifts, and is further predicted to have relatively low sensitivity to density shifts. Using configuration interaction theory, we compute relevant properties of the

6s23s\;^1S_0

Rydberg state for sensing, including the

C_6

coefficient, dc polarizability, blackbody radiation (BBR) shift, and BBR depopulation rate. As a first experimental step, we demonstrate two-photon Doppler-free spectroscopy of the

6s^2\;^1S_0 \rightarrow 6s23s\;^1S_0

transition. From our experimental spectra, we estimate the natural linewidth (lifetime) of the

6s23s\;^1S_0

state to be 90 kHz (1.8

μ

s). We believe this transition, or other

6s^2\;^1S_0 \rightarrow 6sns\;^1S_0

transitions in Yb with

n\approx23

, may find use in a variety of sensing applications, potentially including a two-photon clock, electrometer, or BBR thermometer.